Water-tube boiler.



C. RADIGUER.

WATER TUBE` BOILER. APPLlc/AIION FILED JUNE 2 1. 1915.

. lPatented Jan. 4, 1916.

2 SHEETS-SHEET I.

' Figl NT 'mw COLUMBIA PLANUGRAPH co.,wAsHlNGTON. D. c.

,time e CHARLES RADIGUER, or srfnnivrs7 Fnanongassienonro Vrn-ia sooinrn ANONYME uns nraiatissnmnnrs nnLAuNAY-BELLVILLE, or sr.-iiriainifs,realice,v A couro- `RATION' 0F FRANCE.

Application flied Jane 21, 1ers. seriaino. 35,294..

To'all whom it may concern.'

Beit known that I, CHARLEs.-RADIGUER, citizen of the vFrench Bepublic,residing at St.-Denis, Department ofV thefSeine, in.

France, have invented certain new and useful Improvements in Tater-Tube Boilers;

and fl do hereby declare the following to vbe a full, clear, anden-act description of the inventiomsu'ch as Will enable others skilledv in the art to which it appertainsto make and use the same; v

The present invention has for its object to increase in Bellevilleboiler elements provided, for instance, Withy tivo coils, the vaporizationof the second coil the addition of an auxiliary tube which is placed above the furnace and is subliected to the saine radiation of heatV as the lovverltube ofthe having tivo coils, VWith a partial section` through the tube added atthe bottom of the second coil and partial section through the Fig. 2 is a second tube of the first coil. front elevation of tivo elements side by side. Fig.V 3 is. af rear View "of the tivo' elements side 'by side. Fig. 4 is a section taken on line X-X of Fig. `1, in the center of the i tubular nests of the two elements side by side, vieu-ed from the rear. Fig. 5 is a vertical section of the lower forward header, taken on line Y--Y of Fig. 6. Fig. 6 is a section taken on line Z-'Z-rZ-Zvof Fig. 5, ofthe lower forward header.

Fig. 7 is a front elevation with a' partialV section taken on line T-T of Fig. 8 of the lower forward-l header for an element provided with four coils. Fig. 8 is a section takenon line U-U-UU of Fig.v 7.- Fig. 9 is a side elevation of an element having. a double coil with a special supply collector for the tube added to the second coil.

The elements illustrated have two coils,V each of which has three forked members,.

thus making siX tubes per coil and twelve tubes per element. A greater'number of forked members may be obtained by adding them at the' top. lThe tubes of the first coil are numbered from bottom to top according to the natural sequence of the odd Specification of Letters vllatent.

WATER-TUBE Boi'lniil.i

ratentei'aan; 4., 191e;

numbersrv from 1 to 11;` the tubes of the second coil arefznum'beredfrom bottom to top according toy the natural' sequence of the even numbers from .2 yto `12; the additional tu'be-'isydesignated by 22,. v f Y. Y fThe lower forward :hea-der A is constructed inthe usualimanner with slight .inner modi-- ication's illustrated 'inlFigs 5 and 6. The first Vtubes 1 and 210i` the ftvvo coils are placed onathe same verticalfline and the tube 1 coverslthe-tube With regard to the furnace. so that? the itube V2 of ,the second coil; ldoes not gain anything from the heat radiated directly f In the nevvarrangement, Figs. 5 and 6, the ivaterof the supply collector .penetrates the compartment =`13 andsupplies the tube 1 through ftheroriice .14. later rises freely until it `reaches the vaperi- 15 of the compart-V ment 13, 'and supplies the new-tube desigs Y nated by 22.` The latter 'is mounted in the header at 16 at adistance from lthevtube 2 v.equal to the horizontal distance ofthe other tubes mountedin `the same header; it has the same inclination -as the other tubes but vit descends toward the ,rear and its rear,

header serves as Vsupport forv the rear header of thevvtubes'l, 3 of the Vfirst coil.. lathe compartment 13,;the partition 17 hasan ori-` 1 lice adapted to be closed by va .plug 18 of suitable shapef and `,to Whichthere is sol-v dered a thin'tube 19 penetrating the vaporiging tube 22 whereiny i-t is centered by Vthree ribs 20, 20, 20, Fig. 1, which are stepped upon the tube l19. thereby facilitating its removal through'v the said orifice. .The tube 22 is suppliedthrough the tube 19 andthe hot Water or mixture-of Waterland steam circulates in the annular space between these tvvo` tubes. yand leaves v throu gh the `compart ment 121,l Fig. 6, Which communicates hori- Zontallyivith the tube 2. It follows therefrom that the tube 22 is the first one to be heated of the second coil and is heated'v directly bycontact andl direct radiation of the'Y furnace, as in the tube 1 of the first coil; thel two tubesV are side by side, they have the same inclination butone rises While the .other descends.

ioo i The additionaltubev is parallel to the tube 3 ofthe first coil. The additional tube and the tubejl of the firstcoil cross each otherin proximity to the center of their length. they are therefore as equally heated as possible.

Fig. 6 illustrates the manner of ixingthe tube 19; the plug 18 is formed with a. hasp 181 on which a screw 22 bears, mounted in the external inclosure plug 23; by screwing in the screw 22, the plug 18 is caused to bear against the external surface of the wall 17 and the plug 28 is caused to bear against the internal surface of the wall of the header A. In order to make a joint around the screw Q9., use is made of a cap lock nut 24. This arrangement however, has one defect, namely that during scavenging, the tube 22 is not emptied. In order to empty the same, it is necessary, in the first place, to remove the inner tube 19 by unscrewing the cap nut 24, in the second place toremove the plug 23 by unscrewing the screw 22, and finally remove the tube 19 by maneuvering the same through the hasp 181 of th-e plug 18. It is then possible, by means of a pump,l the jet of which is introduced intothe end of the tube 19, to eXpel all the impurities contained by the same which, after this operation, remains full of clean water.

Figs. 7 and 8 illustrate the addition of a lower auxiliary tube to the third and fourth coil ofI an element provided with four coils. These tubes are designated by 32 and 42. All the other parts of the arrangement shown in Figs. 7 and 8 bear references similar to those of the arrangement shown in Figs. 5 and 6 and the constructions are identical in either case.

The Fig. 9 illustrates a modified form of adding the lower tube to the second coil of an element comprising only two coils. 1n this new arrangement, the supply of the additional tube is effected through a special supply collector 33 provided at the rear, symmetrically with respect to the forward collector 34, it serves as support at-the reall of the elements. This collector 33, located at the rear, is in communication with the dejectors in a like manner to the forward collector 34.

The arrangement described hereinbefore frees the interior of the additional tube; it permits of dispensing with the lower forward double header because the additional tube is mounted on the left of the second forward header as the following tube, which was the first normal tube of the second coil, is now mounted on the right of the same header. The two coils are thus supplied directly and their supply is effected independently. The above arrangement also enables the additional tube to empty itself completely into the dejector when scavenging and the mounting of the additional tube is considerably simplified. It is necessary, however, that the rear of the generator should be accessible because it should be possible to remove the bolt connecting the lower rear header to its collector, just as removing that of the lower forward header, in order to remove the element. An arrangement of this kind will therefore not be applicable in vmany cases, but it will be advantageous to use the same when there is no scarcity in space.

I claim:

1. The combination with a boiler element comprising two coils, the lowermost tubes of which are superposed and inclined upwardly from front to rear, of an additional tube communicating at its forward end with the first tube of the second coil and being inclined downwardly from front to rear with the same inclination as the first tube of the first coil.

2. The combination with a boiler element comprising at least one set of coils with two coils to a set and in which the lower-most tubes of the coils are superposed and inclined upwardly from front to rear, of an additional tube for the highest coil of thto set, said additional tube communicating av its forward end with the first tube of said highest coil and being inclined downwardly from front to rear with the same inclination as the first tube of the lowest coil of the set. In testimony whereof afiiX my signature, in presence of two witnesses.

CHARLES RADGUER. W'itnesses HENRI COHEMS, CHAs. l?. PRnssLY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C. 

